He alleged that police had followed him from the airport upon his arrival in Nigeria.
Mr Hundeyin said that disciplinary measures will be taken against the police officers involved in the assault.
Mr Baba also requested that all public areas, religious areas and government assets be properly inspected to ensure free crime and a peaceful celebration.
China has been accused of coercing more than 230,000 of its nationals, via the overseas police stations, to return to their country and face criminal prosecution.
The police said the exercise is expected to “improve interoperability and synergy” between security agencies “in response to terrorist incidents”.
Mr Adejobi said two suspects, Chinedu Iyanabor, 18, and Sunday Iyagbesun, 52, were arrested at the site.
The protesters marched through Oke-fia down to Olaiya junction while chanting for their remuneration to be paid.
Mr Adejobi maintains that the scheme is not a paid job
The police spokesman said the suspects had allegedly confessed to being members of a secret cult, the Black Axe Confraternity, during a police investigation.
One officer said efforts made to find out the reason for the non-payment have not received any concrete feedback from the Force Headquarters.
